Stop roof drip, corrosion and stock damage for good. Closed-cell spray foam seals metal and asbestos roofs in a single application — installed UK-wide.
In commercial and industrial buildings with single-skin metal roofs, warm internal air meets cold steel and condenses on the underside, dripping onto stock, plant and floors. This roof drip is mistaken for a leak, but it is interstitial condensation forming where the dew point falls on the cold deck. Left unchecked it corrodes purlins, soaks insulation and disrupts operations beneath.
Enverge closed-cell spray foam self-bonds directly to the underside of the cold metal deck as it cures, leaving no gap for moist air to reach the cold surface. By keeping the substrate above dew point and sealing every overlap and fixing, it stops condensation forming at source rather than just catching drips after the fact.
The result is a dry, stable internal environment that protects stored goods, machinery and the steel frame itself. Corrosion is arrested, the roof structure is preserved, and businesses avoid the recurring cost and downtime of chasing phantom leaks across single-skin roofs season after season.
Seals the cold deck so warm air never reaches dew point on the cold steel surface.
Keeps purlins and sheets dry, halting the rust that condensation drives across steel over the years.
Eliminates roof drips onto racking, machinery and finished goods stored on the floor below.
Holds the substrate above dew point, preventing the interstitial condensation that forms inside the roof.
Self-bonds over every lap, fixing and joint, leaving no gaps for moist air to migrate.
Replaces endless seasonal leak-chasing with one permanent, single-application solution that lasts for years.
Enverge closed-cell foam bonds tightly to metal, cement-fibre and asbestos, sealing the roof and stopping condensation for the life of the building.
The closed-cell foam self-bonds to the cold metal underside, raising its surface temperature above dew point so warm internal air can no longer condense on it. Its low vapour permeability and continuous airtight seal block moist air migration to the cold deck, while the rigid cured layer adds durability and corrosion protection to the steel.
Typical published values for Enverge Nexseal LE closed-cell foam. Full technical specification →
Closed-cell foam bonds chemically to profiled metal, box-profile and cement-fibre sheets, following every ridge and trough with no fixings, battens or framework. Because the foam carries its own integral vapour barrier, the cold underside that condensation forms on is removed in the same pass — a 15–25 mm coat is typically enough to stop drip, while 25–75 mm delivers a genuine thermal upgrade with U-values down to around 0.18 W/m²K in the right build-up.
Application progresses quickly across open spans, so live operations can usually keep running while zoned sections are sprayed. Where a fire-rated finish is specified, the foam is coated with DC315 intumescent to achieve Euroclass B-s2,d0, and every installation is handed over with full documentation and a 25-year manufacturer-backed product warranty.
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Tell us about your commercial roofs & building.
Free survey of your commercial roofs & condensation check.
The right system for your commercial roofs.
Approved applicators, minimal disruption.
Handover pack & 25-year warranty.
Closed-cell spray foam across a large warehouse-style venue roof.
Insulation for a temperature-critical manufacturing process.
Concrete spray foam eliminating cold-bridging and condensation.
Send us your building details and our technical team will specify the right system and a clear budget. No obligation.
That is condensation, not a leak. Warm internal air hits the cold underside of the steel and the moisture in it condenses once the surface falls below dew point. Spray foam keeps the deck warm and sealed so it cannot form.
It halts further corrosion by keeping the steel dry and above dew point, removing the moisture that drives rust. Heavily corroded members should be assessed first; the foam then protects sound steel from future condensation damage.
In most commercial settings work is phased zone by zone so operations continue. We discuss access, racking clearance and ventilation during survey to plan around your production or storage schedule.
Yes. Because the foam self-bonds to the substrate, it follows any profile or pitch, sealing box profiles, corrugated sheets and complex eaves or ridge junctions equally well, all without separate fixings or fabric.
Yes, the Nexseal LE closed-cell foam we install is manufacturer-certified under Agrément 09/4610 and carries a 25-year manufacturer-backed product warranty, giving specifiers and building owners documented, independent assurance for commercial condensation control.
A 15–25 mm anti-condensation coat controls drip on most profiled metal roofs. Where thermal upgrade is the goal we typically apply 25–75 mm of closed-cell foam — the exact depth is specified after a free survey.
Enverge closed-cell foam achieves BS 476 Part 7 Class 1 uncoated, and Euroclass B-s2,d0 when finished with a DC315 intumescent coating. We specify the right build-up for your building's use.
Yes — application progresses across large areas each day in zoned sections, so production, storage and staff can usually continue working throughout.
Specialist commercial spray foam, installed UK-wide by the Duratite Group's spray foam specialists.
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